MAXQ3120

Features:

High-Performance, Low-Power, 16-Bit RISC Core
  DC to 8MHz Operation, Approaching 1MIPS per MHz
  3.3V Core and I/O
  33 Instructions, Most Single-Cycle
 Three Independent Data Pointers Accelerate
    Data Movement with Automatic Increment/
    Decrement
 16-Level Hardware Stack
 16-Bit Instruction Word, 16-Bit Data Bus
 16 x 16-Bit, General-Purpose Working Registers
 Optimized for C-Compiler (High-Speed/Density Code)
Program and Data Memory
   16kWords Flash Memory
   1,000,000 Flash Write/Erase Cycles
   256 Words of Internal Data RAM
   JTAG Bootloader for Programming
Dual, 16-Bit Sigma-Delta ADCs
   Differential Analog Input Channels
   Programmable Gain of 1x or 16x
   Integrated Sinc3 Filters
   Digital Phase Compensation and Trimmable Bandgap Reference
Peripheral Features
  Up to 32 General-Purpose I/O Pins
  112-Segment LCD Driver
   Up to 4 COM and 28 Segments
   Static, 1/2, and 1/3 LCD Bias Supported
  No External Resistors Required
 Two Serial USARTs, One with Infrared PWM Support
  One-Cycle, 16 x 16 Hardware Multiply/Accumulate with 40-Bit Accumulator
  Three 16-Bit Programmable Timers/Counters,One with Infrared PWM Support
  8-Bit, Subsecond, System Timer/Alarm
  Battery-Backed, 32-Bit RTC with Time-of-Day Alarm and Digital Trim
  Programmable Watchdog Timer
Flexible Programming Interface
  Bootloader Simplifies Programming
  In-System Programming Through JTAG
  Supports In-Application Programming of Flash Memory
Power Consumption
  < 28mA at 8MHz, 3.3V Flash Operation
  320A Standby Current in Sleep Mode
   Low-Power Divide-by-256 Mode


Application

Single-Phase
Electricity Metering
Battery-Powered and
Portable Devices
Electrochemical and
Optical Sensors
Industrial Control
Data-Acquisition
Systems and Data
Loggers
Home Appliances
Consumer Electronics
Thermostats/Humidity
Sensors
Security Sensors
Gas and Chemical
Sensors
HVAC
Smart Transmitters


Specifications

Voltage Range on DVDD Relative to DGND ...........-0.3V to +4.0V
Voltage Range on AVDD Relative to AGND............-0.3V to +4.0V
Voltage Range on AGND Relative to DGND ...........-0.3V to +0.3V
Voltage Range on AVDD Relative to DVDD............-0.3V to +0.3V
Voltage Range on Any Pin Relative to DGND
     Except AN0+, AN0-, AN1+, AN1-.........-0.3V to (DVDD + 0.5V)
Voltage Range on AN0+, AN0-, AN1+,
   AN1- Relative to AGND ......................................-4.0V to +4.0V
Operating Temperature Range ........................-40°C to +85°C
Junction Temperature....................................................+150°C
Storage Temperature Range .........................-65°C to +150°C
Soldering Temperature .......................................See IPC/JEDEC
                                                                J-STD-020 Specification


Description

The MAXQ3120 microcontroller is a high-performance,16-bit microcontroller that incorporates dual, true-differential,16-bit sigma-delta analog-to-digital converters (ADCs), a liquid-crystal display (LCD) interface that can drive up to 112 segments, and a real-time clock (RTC) module with a dedicated battery-backup supply. The MAXQ3120 is uniquely suited for the single-phase electricity metering market, but can be used in any application that requires high performance operation. The device can operate at a maximum of 8MHz (DVDD = 3.3V). The MAXQ3120 has 16kWords of flash memory, 256 words of RAM, three 16-bit timers, and two universal synchronous/asynchronous receiver/transmitters (USARTs). The microcontroller core and I/O of MAXQ3120 are powered by a single 3.3V supply, and an additional battery supply keeps the RTC running during power outages.